Rechargeable battery having current collector

Abstract

A rechargeable battery includes: a case having an opening; an electrode assembly in the case and including a first electrode and a second electrode; a cap plate coupled to the opening of the case; a first current collector electrically connected to the first electrode; and a support fixed to an inner surface of the case, wherein the first current collector is hooked on the support.

What is claimed is: 
     
       1. A rechargeable battery comprising:
 a case having an opening at an upper end of the case opposite a bottom of the case, the bottom of the case being spaced apart from the upper end in a first direction; 
 an electrode assembly in the case and comprising a first electrode and a second electrode, the electrode assembly being insertable in the first direction through the opening of the case; 
 a cap plate coupled to the opening of the case; 
 a terminal extending through a lateral surface of the case in a second direction transverse to the first direction, the lateral surface extending in the first direction between the bottom of the case and the upper end of the case, the terminal being electrically connected to the second electrode; and 
 a second current collector connecting the second electrode with the terminal, the second current collector being hooked on the terminal. 
 
     
     
       2. The rechargeable battery of  claim 1 , wherein the second current collector comprises:
 a base plate bonded to the electrode assembly; and 
 a protrusion extending from the base plate and hooked on the terminal. 
 
     
     
       3. The rechargeable battery of  claim 2 , wherein the second current collector further comprises:
 a plurality of guide protrusions that separately extend from the protrusion. 
 
     
     
       4. The rechargeable battery of  claim 2 , wherein the terminal comprises:
 a plate terminal outside the case; 
 a pillar terminal extending through the case; and 
 a connection plate fixed to the pillar terminal and having a plate shape. 
 
     
     
       5. The rechargeable battery of  claim 4 ,
 wherein the connection plate has a support opening, and 
 wherein at least a portion of the pillar terminal is in the support opening. 
 
     
     
       6. The rechargeable battery of  claim 4 ,
 wherein the connection plate is arranged perpendicular to the bottom of the case, and 
 wherein the protrusion is hooked on an upper end of the connection plate. 
 
     
     
       7. The rechargeable battery of  claim 2 ,
 wherein a support is fixed to an inner surface of the case, and 
 wherein a first current collector, electrically connecting the first electrode with the support, is hooked on the support. 
 
     
     
       8. The rechargeable battery of  claim 7 , wherein the support comprises:
 a bonding portion bonded to the case; 
 an inclination portion obliquely bent from the bonding portion and extending away from the case; and 
 a support portion bent from the inclination portion, parallel to the first current collector, and bonded to the first current collector, 
 wherein the first current collector comprises a protrusion that is supported by a top surface of the support portion. 
 
     
     
       9. The rechargeable battery of  claim 7 , wherein the support comprises:
 a bonding portion bonded to the case; and 
 a support portion vertically bent from the bonding portion and extending toward the electrode assembly. 
 
     
     
       10. The rechargeable battery of  claim 7 , wherein the support comprises:
 a bonding portion bonded to the case; 
 a support surface by which the first current collector is hooked; and 
 an inclination surface connecting the support surface with the bonding portion.